Dumb question....

So I am trying to order the super stock springs for my Duster. I have called Mancini Racing and asked them about part #MOPP3412002/2003. In the description they say they fit 1968 Hemi super stock A body. The guy at Mancini said "he is not really an old car guy" but looking at the description they should work. I was under the impression that all A bodys used the same springs. Is there something different about 68? It seems like it may just be a misleading part description but I would like to make sure before ordering them. Thanks in advance.